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POV 3.5b4 on PII233 128 MB with NT4Sp6
I have reported this bug some time ago and I gave solution for it for
MegaPOV but without sources I'm not sure it is exatly the same
problem.
Here is my solution:
http://news.povray.org/povray.unofficial.patches/7152/
And here is script to test it:
//<SDL>
#local Step=.1;
#local Obj=union{
#local Counter=Step;
#while (Counter<100)
difference{
sphere{0,Counter}
sphere{0,Counter-(Step/2)}
}
#local Counter=Counter+Step;
#end
}
#local Start=2*max_extent(Obj).x*x;
#local Norm=<0,0,0>;
global_settings{max_intersections 9}
#local Inter=trace(Obj,Start,-Start,Norm)
global_settings{max_intersections 99}
#local Inter=trace(Obj,Start,-Start,Norm)
//</SDL>
ABX
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>POV 3.5b4 on PII233 128 MB with NT4Sp6
>
>I have reported this bug some time ago and I gave solution for it for
>MegaPOV but without sources I'm not sure it is exatly the same
>problem.
What was the solution for MegaPOV? I suspect the problem is the same
as it was there, and it's not at all nice.
--
#macro R(L P)sphere{L __}cylinder{L P __}#end#macro P(_1)union{R(z+_ z)R(-z _-z)
R(_-z*3_+z)torus{1__ clipped_by{plane{_ 0}}}translate z+_1}#end#macro S(_)9-(_1-
_)*(_1-_)#end#macro Z(_1 _ __)union{P(_)P(-_)R(y-z-1_)translate.1*_1-y*8pigment{
rgb<S(7)S(5)S(3)>}}#if(_1)Z(_1-__,_,__)#end#end Z(10x*-2,.2)camera{rotate x*90}
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On 28 Sep 2001 23:57:13 -0400, ron### [at] povray org (Ron Parker)
wrote:
>On Wed, 26 Sep 2001 09:43:25 +0200, W?odzimierz ABX Skiba wrote:
> >POV 3.5b4 on PII233 128 MB with NT4Sp6
>
> > I have reported this bug some time ago and I gave solution for it for
> > MegaPOV but without sources I'm not sure it is exatly the same
> > problem.
>
> What was the solution for MegaPOV?
Have you checked link posted by me within first post ?
Solution was there.
Check again : http://news.povray.org/povray.unofficial.patches/7152/
> I suspect the problem is the same
> as it was there, and it's not at all nice.
Insted of forbiding proposed by me there could be also release of all
stacks and new alloc for them.
ABX
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>On 28 Sep 2001 23:57:13 -0400, ron### [at] povrayorg (Ron Parker)
>wrote:
>
>>On Wed, 26 Sep 2001 09:43:25 +0200, W?odzimierz ABX Skiba wrote:
>> >POV 3.5b4 on PII233 128 MB with NT4Sp6
>>
>> > I have reported this bug some time ago and I gave solution for it for
>> > MegaPOV but without sources I'm not sure it is exatly the same
>> > problem.
>>
>> What was the solution for MegaPOV?
>
>Have you checked link posted by me within first post ?
>Solution was there.
>Check again : http://news.povray.org/povray.unofficial.patches/7152
HTTP links aren't very useful if you're on a machine without a decent
web browser, as I often am. These are even less useful, since there's
no way to find the article in my archive from the information in the URL.
--
plane{-z,-3normal{crackle scale.2#local a=5;#while(a)warp{repeat x flip x}rotate
z*60#local a=a-1;#end translate-9*x}pigment{rgb 1}}light_source{-9red 1rotate 60
*z}light_source{-9rgb y rotate-z*60}light_source{9-z*18rgb z}text{ttf"arial.ttf"
"RP".01,0translate-<.6,.4,.02>pigment{bozo}}light_source{-z*3rgb-.2}//Ron Parker
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On 1 Oct 2001 11:40:25 -0400, ron### [at] povrayorg (Ron Parker)
wrote:
>HTTP links aren't very useful if you're on a machine without a decent
>web browser, as I often am. These are even less useful, since there's
>no way to find the article in my archive from the information in the URL.
sorry
Group: povray.unofficial.patches, povray.programming
From: Wlodzimierz ABX Skiba
Subject: max_intersections - possibility of bug ?
Date: 8 Jan 2001 04:39:06 EST
is this enough ?
sorry I "returned from doors" to answer you and I have no time to be
more precise
ABX
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From: Thorsten Froehlich
Subject: Re: bug within intersection stack (with crash)
Date: 1 Oct 2001 12:21:29
Message: <3bb89809@news.povray.org>
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Skiba <abx### [at] babilonorg> wrote:
> Group: povray.unofficial.patches, povray.programming
> From: Wlodzimierz ABX Skiba
> Subject: max_intersections - possibility of bug ?
> Date: 8 Jan 2001 04:39:06 EST
>
> is this enough ?
Not really, message ID or xref are far more useful. However, your message
can be found by subject line using telnet news.povray.org:119
200 news.povray.org DNEWS Version 5.5c3, S0, posting OK
group povray.unofficial.patches
211 7288 5 7452 povray.unofficial.patches selected
xpat subject 1-10000 max_intersections - possibility of bug ?
221 subject fields follow
5724 max_intersections - possibility of bug ?
.
quit
205 closing connection - goodbye!
So the xref number should be 5724 for your message in
povray.unofficial.patches.
thorsten
____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde
Visit POV-Ray on the web: http://mac.povray.org
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On Mon, 01 Oct 2001 12:21:26 -0400, Thorsten Froehlich wrote:
>Skiba <abx### [at] babilonorg> wrote:
>
>> Group: povray.unofficial.patches, povray.programming
>> From: Wlodzimierz ABX Skiba
>> Subject: max_intersections - possibility of bug ?
>> Date: 8 Jan 2001 04:39:06 EST
>>
>> is this enough ?
>
>Not really, message ID or xref are far more useful. However, your message
>can be found by subject line using telnet news.povray.org:119
Or in my archives by the same basic method:
[ron@fwi news]$ search -iindex/povray.programming subject=max_intersections
# results: 1
100 povray/programming/5011 2357 max_intersections - possibility of bug ?
--
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbf 1}hollow interior{media{emission 3-T}}}#end
Z(-x-x.2x)camera{location z*-10rotate x*90normal{bumps.02scale.05}}
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<abx### [at] babilonorg> wrote:
> On 1 Oct 2001 11:40:25 -0400, ron### [at] povrayorg (Ron Parker)
> wrote:
>
> > HTTP links aren't very useful if you're on a machine without a decent
> > web browser, as I often am. These are even less useful, since there's
> > no way to find the article in my archive from the information in the URL.
>
> sorry
>
> Group: povray.unofficial.patches, povray.programming
> From: Wlodzimierz ABX Skiba
> Subject: max_intersections - possibility of bug ?
> Date: 8 Jan 2001 04:39:06 EST
>
> is this enough ?
> sorry I "returned from doors" to answer you and I have no time to be
> more precise
Sorry again
I was very late - I was hurry to bus
I spend 4 weeks on building my house and now I'm back and can see that
even if you found my article the bug is present within beta 6
If I can suggest: my method with forbidding changing of
max_intersection is not elegant (but works).
At time of parsing there is always base level on intersection stack
therefore it should be rather reallocated as requested
ABX
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